US Bridges

SR1321 over I40 US64

Fair

Wake County, North Carolina · 0.6 MI N SR1009 · Structure no. 000000001830558

Built
1979
46 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
297 ft
4 main spans
Daily traffic
6,900
2021 count
Owner
State
State Highway Agency

About this bridge

SR1321 over I40 US64 is a steel stringer/multi-beam or girder carrying SR1321 over I40 US64 in Wake County, North Carolina. It was built in 1979, so it is 46 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,900 vehicles a day, roughly 7% of them trucks, projected to reach 13,800 by 2040. The structure is 297 ft (90.5 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR1321
CrossesI40 US64
Location0.6 MI N SR1009
RouteState Highway 1321
CountyWake County
StateNorth Carolina
Coordinates35.75578, -78.71719
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating37.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length297 ft (90.5 m)
Longest span102 ft (31 m)
Deck width47 ft (14.2 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2021)
Projected traffic13,800 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1321 over I40 US64 built?

It was built in 1979, making it 46 years old in 2025.

What condition is SR1321 over I40 US64 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does SR1321 over I40 US64 carry?

About 6,900 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1321 over I40 US64?

The structure is 297 ft (90.5 m) long with a longest span of 102 ft (31 m) and a deck 47 ft wide.

Who owns SR1321 over I40 US64?

It is owned by the State Highway Agency.